Rotary engine



NITED sTATEs PATENT oEEI'cE.

FREDERIC KETTLER, OF MILIVAUKIIE, VISCONSIN.

ROTARY ENGINE.

Specification of Letters Patent No. 30,481, dated October 23, 1860.

To all whom it may concern:

Be it known that I, FREDERIC KETTLER, of Milwaukee, in the county of Milwaukee, in the State of Wisconsin, have invented a new and Improved Rotary Engine; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

The nature of my invention consists in a stationary cylinder (which has the form of a circular ring) and a revolving disk with inserted pistons; the latter working as throttle-valves in the inner periphery of the cylinder during the rotary motion of the disk; also a machinery to regulate the alternate motion of the rotary engine.

To enable others skilled in theart to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 represents an exterior elevation of the whole apparatus; Fig. 2 is a side view; Figs. 3 and 4 are interior elevations; Fig. 5 is a sectional part of the whole, and Fig. 6 is an elevation of the disk.

Similar letters refer to like parts.

A is the cylinder or a round hollow ring. It is cast in two pieces and bored perfectly true; below M and M2 this cylinder is furnished with flanges for the purpose of rectifying and repairing the internal structure. The cylinder A is grooved innerly at 7 and open at 70 to receive the disk Gr.

B and C are the steam ports and D, H and L the discharge ports of the cylinder A.

G is the disk which is firmly attached on a horizontal shaft F. The disk Gr is constructed in such a manner so as to work freely in the groove 1" and opening p of the cylinder A.

z' and I are holes in the disk G in which the pistons a with their respective shafts m and studs 0 and 79 are working. The pistons a are constructed round and flat, and of the same thickness of the disk G; they work like throttle valves. The number of pistons is here siX. Said number may be larger or smaller according to the power required. Said pistons a are provided with a ring packing and springs so as to fit and work air tight in the cylinder A. The disk Gr is provided on both sides with a sharp ring f, as is shown in Fig. 5.

F is the mainshaft of the engine.

The studs 0 and ,7c and pistons a are firmly attached to the shafts m. The studs 0 are situated in the same plane with the pistons a, and the studs /c form a right angle with them. The shafts m radiate from the center of the disk Gr and works freely in the corresponding holes or boxes at n. The shafts m run lengthwise through the center of the pistons a and are firmly attached to them.

E and E are the covers with borders e on it. The covers E and E are provided with packing and fastened by means of screws g to the cylinder A, so that the cylinder A will be perfectly airtight. Their borders e will be pressed airtight to the sharp disk rings f. The disk rings f are constructed sharp so as to cause less friction. In the center of the covers E and E are holes to allow the main shaft F to pass freely through. The covers E, E are provided with abutments c, d to work the pistons a.

The steamports B and C and discharge ports D, H and L are provided with cocks to regulate the alternate motion of the engine. If the cocks at B and L are open the machine will work from the left to the right and when shut the cocks C, H have to be opened, then the machine will work the other way. The discharge port D remains always open for the discharge of the condensing water.

M and M2 are a pair of packing boxes, they are fastened exactly opposite each other on the right and left into the cylinder A, and constructed in such a way so as to allow the disk to work airtight between them.

Suppose now that steam was admitted at the steamport B and that two of the pistons a are ready to receive the pressure of steam, that is to say that they will form right angles with the disk G; said pistons will be forced by the steam around the inner periphery of the cylinder A and communicate a rotary motion to the disk Gr and main shaft F. As soon as now the pistons revolve around the inner periphery of the cylinder A, the studs 0 will come in contact with the abutments c and shut off the communication of It is obvious that tbe pistons a Will Work l What claim as Iny invention and desire 10 only in the upper part of the cylinder A to secure by Letters Patent isbetween the packing boxes M and M2. The A rotary engine, constructed and operower mrt (f the cylindreh :gemss1 onlfyto ating substantially as herein described. 5 ecp t e pis ons warm. e W o e o e cylinder is supported byaframe. The shaft FREDERIC KETTLER' is here represented to Work horizontally but Witnesses: it may Work as Well vertically by turning the W. MERTZ, cylinder A the other Way. JOHNSTON MARSTEAD. 

